12 multiple-choice questions, progressively harder.
In the decimal 0.40.40.4, which place is the digit 444 in?
Solution
Correct answer: A
Count places to the right of the decimal point. The very first place after the point is the tenths place.
0.4=4100.4 = \frac{4}{10}0.4=104
So the digit 444 is in the tenths place.
What is the value of the digit 777 in the decimal 0.70.70.7?
Correct answer: C
The first place after the point is the tenths place, and the 777 sits there.
7×110=7107 \times \frac{1}{10} = \frac{7}{10}7×101=107
So the value of the digit 777 is 710\tfrac{7}{10}107.
Which is the expanded form of 0.630.630.63?
Correct answer: B
Read off the place of each digit: 666 is in the tenths place and 333 is in the hundredths place.
0.63=610+31000.63 = \frac{6}{10} + \frac{3}{100}0.63=106+1003
Write 0.90.90.9 as a fraction.
There is one digit after the point, so the denominator is 101010.
0.9=9100.9 = \frac{9}{10}0.9=109
Write 0.070.070.07 as a fraction.
Correct answer: D
There are two digits after the point, so the denominator is 100100100. The placeholder zero keeps the 777 in the hundredths place.
0.07=71000.07 = \frac{7}{100}0.07=1007
Which symbol makes a true statement: 0.8 □ 0.30.8 \;\square\; 0.30.8□0.3?
Both decimals have one place, so compare the tenths digit: 888 against 333.
8>3 ⇒ 0.8>0.38 > 3 \;\Rightarrow\; 0.8 > 0.38>3⇒0.8>0.3
What number is equal to 310\tfrac{3}{10}103 written as a decimal?
Three tenths means the digit 333 sits in the first place after the point.
310=0.3\frac{3}{10} = 0.3103=0.3
Which is the expanded form of 0.80.80.8?
The 888 is the only digit after the point, and it sits in the tenths place.
0.8=8100.8 = \frac{8}{10}0.8=108
Which symbol makes a true statement: 0.2 □ 0.70.2 \;\square\; 0.70.2□0.7?
Both decimals have one place, so compare the tenths digit: 222 against 777.
2<7 ⇒ 0.2<0.72 < 7 \;\Rightarrow\; 0.2 < 0.72<7⇒0.2<0.7
How do you read the decimal 0.50.50.5 aloud?
The 555 is the only digit after the point, so it is in the tenths place, and the last place names the fraction.
0.5=5100.5 = \frac{5}{10}0.5=105
So 0.50.50.5 reads "five tenths."
Which place is the digit 666 in within the decimal 0.0620.0620.062?
Count from the point: tenths, hundredths, thousandths. The first place is a 000, and the 666 is the second digit after the point.
0.062=010+6100+210000.062 = \frac{0}{10} + \frac{6}{100} + \frac{2}{1000}0.062=100+1006+10002
So the digit 666 is in the hundredths place.
Which decimal is the largest: 0.10.10.1, 0.90.90.9, 0.40.40.4, 0.60.60.6?
Each decimal has a single digit in the tenths place, so just compare those digits: 1,9,4,61, 9, 4, 61,9,4,6.
9>6>4>1 ⇒ 0.9 is largest9 > 6 > 4 > 1 \;\Rightarrow\; 0.9 \text{ is largest}9>6>4>1⇒0.9 is largest
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